Governor for gas-engines



(No Model.)

* J. A. CHARTER.

GOVERNOR FOR GAS ENGINES.

Patented July 2, 1895.

aitozmm o wwneooay Urrnn STATES ATENT Erica,

JAMES ADAMS CHARTER, OF BELOIT, WISCONSIN, ASSIGNOR OF ONE-HALF TO JOHN CHARTER, OF STERLING, ILLINOIS.

GOVERNOR FOR GAS-ENGINES.

SPECIFICATIQN forming part of Letters 1?atent No. 542,043, dated July 2, 1895. Application filed November 20, 1894. Serial No.'529,391- (No model.)

To all whom it may concern: I to and from the exhaust-valve stem 4, and the Be it known that I, JAMES ADAMS CHAR- said rod has a roller or projectionf, arranged TER, a citizenof the United States, residing at opposite the edge of a cam D upon a shaft 5, Beloit,inthe county of Rock and State of Wisthe said cam having a toe or projection 6. cousin, have invented certain new and useful The shaft 5 is geared by meansof gears E F Improvements in Governorsfor Gas-Engines, with the crank-shaft G, the gear F on the of which the following is a specification. crank-shaft being one-half the circumference My invention relates to gas-engines, and of that upon the shaft 5, so that there will be consists in means for regulatingthe same by two revolutions of the crank-shaft to one revoro controlling the exhaust andin means for prop: lution of the shaft 5, and consequently the too erly supplying and regulating the supply of or projection 6 of the cam D will be brought volatile liquid, as fully set forth hereinafter against the rollerf to push in the rod O and and as illustrated in the accompanying drawvalve-stem 4 and open the exhaust-valve once ings, in which- I l to each two revolutions of the crank-shaft. 15 Figure 1 is a longitudinal sectional eleva- In the casing I, which communicates with tion of sufficient of a gas-engine to illustrate the inlet-port a, isaself-acting or check valve my improvement. .Fig. 2 is a plan view of the J, which is normally held in its seat under a crank-shaft and connections. Fig. 3 is a decomparativelyslight pressure by means of a tached elevation,in part section,of the inletspiral spring 7, coiled around the stern of the 2o valvecasing and adjuncts. 3 valve andbearingupon the end of the washer The enginehas acylinder A, mounted upon at the end thereof, the said spring exerting a suitable base B, with supports for a crankonly sufficient pressure to prevent the valve shaft Gr,the connecting-rod (not shown) being J from lifting by the outflow of the spent connected to a piston W in the cylinder A, gaseswhen the exhaust is open. i 25 which has an inlet-port a and an exhaust b It will be evident thatif the exhaust-valve. near the rearend of the cylinder. These parts is closed when the piston W moves forward are so constructed, arranged, and operated the piston will draw in a charge of gas and that as the piston moves forward it draws in air through the port a, lifting the valve J; but a charge of gas and air. Asit moves back it if the exhaust-valve H is opened at the time 3o compresses the same. The charge is then exthe piston moves forward then the air will ploded and the piston moves forward and draw in through the port I) and there will he drives the crank, and the exhaust'valve is no indraft of the mixed charge'of gas and then opened as the piston moves back and exair through the port a, and consequently the hausts the spent gases from the eugine-cylim engine willrun withouta charge and without 33 der. Heretofore the regulation of this class explosion. I take advantage of this fact to of engines has been accomplished through the avoid the use of appliances for governing the medium of devices which are generally someflow of the volatile liquid and to avoid the inwhat complex,delioate in operation,andliable troduction of an explosive whenever the ento get out of order, and always expensive to gine acquires an undue rate of speed, effect- I 40 construct. ingthese results by holding openthe'valve 9c One object of my invention is to effect the H. For thispurposel make use of a suitable desired regulation without the use of complex governing'device and of a deten t, which will appliances, and to this end I make use of de be thrown in position to hold open the valve. vices which I will now describe. by the action of the governor when'the speed 5 The exhaust-valve H is seated in the exof the engine becomes too rapid, the detent 5 haust-casing b, so asto normally close the being released when the speed is reduced. exhaust-port,aspringpbearing upon awasher Different appliances may be employed; but,

3 of the exhaust-valve stem 4 and tending to as shown in Figs. 1 and 2, there is a' sleeve P, I hold the exhaust-valve in its seat. Arod C sliding on the crank-shaft G and provided 50 is mounted in suitable bearings, so as to slide with 'a flange or collar '0, and this sleeveis Ioo conneotedby a pin 13 with the crank-arms 8 8 of the governor Q, the balls 9 9 on the governor being connected by a spring 10.

To a bracket 33, connected to the frame of the engine, is pivoted a lever T, having at one end a friction-roller 31, the other end being beveled and adapted to engage the grooved periphery of a roller f upon the rod 0, turning upon a stud in line with the stud of the roller f.

In operation the toe 6 of the cam D will always push in the rod 0 sufliciently to permit the beveled end of the lever T to be swung into position opposite the grooved edge of the roller f, a result which will take place if the engine moves too fast, causing the balls of the governor to fly out and carrying outward the sleeve P, bringing its flange D to bear against the roller at the end. When the toe of the cam D leaves the roller f, the roller f will en gage the end of the lever T, which acts as a the end of the lever T, when a spring 32 will draw the outer end of theleverT against the flange o, carrying the other end from opposite the roller f, when the operation will proceed as before.

Thedevice above described may be used in connection with an engine which is supplied with both gas and air or in connection with engines in which there is a volatile fluid supplied, the latter being shown.

In the construction shown the casing I has an inlet-pipe N, communicating with a reservoir L, arranged at one side of the casing I. The inlet-pipe has an inturned end, the" top of which may be on a le Vglyvith the end of an outlet or overflow pipe' M, extending.

through the bottom of the casing; or the inletpipe may extend very slightly above the level of the said pipe Maestro-warn Fig. 8, so that the liquid in the inlet-pipe will always be at a point level with or but slightly below the end of the pipe M, and. whereby any upfiow of air through the casing I and through the pipe 16 will readily carry with it the liquid from the pipe N.

In order to govern the amount of liquid 1 which is lifted at each outward stroke of the piston, I provide the pipe N with a valve K, which will regulate the flow with great nicety.

The reservoir L is supplied with oil by means of a pump. Thus there is a reservoir R, from which the pipe M extends upward. Another pipe 17 extends from the bottom of the reservoir to the inlet-valve casing 18 of a pump S, and a pipe 19 20 extends to a port 21 of the reservoir L. By this arrangement the pump S may be maintained in continuous operation, drawing the oil from the reservoir R and forcing it into the reservoir L, and the latter always having the same quantity in it, any excess flowing out through the pipe M into the reservoir R.

The pump S may be operated in any suit able manner. As shown, the plunger of the said pump is connected by a connecting rod 22 with a Wrist-pin 23 upon the side of the cam D of the shaft E.

It will be seen that by holding open the exhaust when the speed of the engine becomes too great I prevent the passage of any air-current through the air-chamber and along the fluid-inlet pipe N without the use of any appliances or means for regulating the flow of the fluid or of the air through the air-chamber. I thus avoid the means of governing the oil or the inflowing air that has heretofore been necessary.

Without limiting myself to the precise construction and arrangement of parts described, I claim as my invention 1. The combination with theexhaust valve of a gas engine, of a rod 0 carrying rollers f, f,-the latter being grooved, a detent for engaging the latter roller, a governor controlling the detent, and acam for engaging the roller 0, substantially as described.

2. The combination with the inlet valve 1 casing I of a gas engine, of an inlet pipe having an upturned end,.a reservoir L, communicating with said pipe, an overflow pipe M from said reservoir with its end below but nearly level with that of the inlet pipe, a--reservoir R communicating with the pipe M and a pump S with a pipe leading from thereservoir R to pump S, and another pipe leading from the pump S to the reservoir L, substan tially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES ADAMS CHARTER.

Witnesses:

J. G. WIoKHEM, S. H. ALLEN. 

